LC8740C8A Datasheet, PDF (1/25 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

Ordering number : ENA0122
LC8740C8A
LC8740B2A
LC874096A
CMOS IC
Internal 128K/112K/96K-byte ROM (Program ROM/CGROM),
2048-byte RAM, 1024-byte CGROM,
and 704×10-bit CRT Display RAM
8-bit 1-chip Microcontroller
Overview
The SANYO LC8740C8A/B2A/96A is a closed caption TV controlling 8-bit microcomputer that, centered around a
CPU running at a minimum bus cycle time of 71ns, integrates on a single chip a number of hardware features such as
128K/112K/96K-byte ROM (size-variable program ROM and CGROM), 2048-byte RAM, 1024-byte CGRAM,
704×10-bit CRT display RAM, sophisticated 16-bit timers/counters (may be divided into 8-bit timers), a 16-bit
timer/counter (may be divided into 8-bit timers/counters, two 8-bit timers with a prescaler, a base timer serving as
a time-of-day clock, a high-speed clock counter, a synchronous SIO interface (with automatic block transmission/
reception capabilities), two channels of asynchronous/synchronous SIO interface (bus mode selectable), a UART
interface (full duplex), an 8-bit 8-channel AD converter, one 14-bit PWM channel, three 8-bit PWM channels, a closed
caption data slicer, closed caption compatible OSD, a system clock frequency divider and ROM correction function.
Features
„Internal ROM
• 131072 × 8 bits
• 114688 × 8 bits
• 98304 × 8 bits
(LC8740C8A)
(LC8740B2A)
(LC874096A)
„Internal RAM
• General-purpose RAM: 2K bytes
• Character generator RAM: 1K bytes
• CRT display RAM:
704 × 10 bits
• ROM correction RAM: 256 bytes
„Minimum Bus Cycle Time
• 71ns (14.1MHz)
Note: The bus cycle time here refers to the ROM read speed.
„Minimum Instruction Cycle Time
• 212ns (14.1MHz)
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
Ver.1.02
N2906HKIM 20060911-S00001 No.A0122-1/25